22', Aluminum, Type IA Multi-Purpose Ladder, 300 LB Duty Rating, Advance Heavy Duty Ergonomicy Duty Polymer Spring Loaded L-Locks, Quick Activating Snap Lock Hinge, 1 Man Set Up, Heavy Duty, Heavy Duty Locking Pins, Multi-Positioning, Meets OSHA, CSA & ANSI Standards, Will Work As A 5-9', Step Ladder,11'-19', Extension Ladder 1'-4', Scaffold, Extra Wide Flared Bottom For Stability, Features A Telescoping Design For Maximum Versatility.